B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 41/38 (2006.01)
Patent
CA 2133292
A tamper-evident closure is disclosed to seal a container having a threaded neck portion and an outwardly extending annular flange adjacent to and beneath the threaded neck portion. The closure comprises a cap portion and a ring portion. The cap portion has a top wall and an annular skirt. The ring portion comprising an upper ring, a lower ring and a plurality of inwardly oriented wedges positioned between the upper and lower ring. The ring portion is connected to the lower edge of the skirt so as to be easily breakable. The plurality of inwardly oriented wedges are circumferentially distributed and spaced apart from each other between the upper and lower ring. Each wedge has an upper and lower edge connected along a thin folding lines to the lower and upper ring. Each wedge also has an inwardly and upwardly projecting apex positioned and sized to fit under the outwardly extending flange of the threaded neck portion of the container when the cap portion of the closure is fully screwed onto the threaded neck portion. In use, when the closure is screwed onto the container, the wedges are allowed to move radially outwardly thanks to the thin folding lines joining the wedges to upper and lower ring and thus the wedges pass over the flange of the neck. Then, the wedges return to their original position where the apexes extend under the flange. As soon as someone tries to remove the closure, the apexes of the wedges engage the flange of the neck and get lock onto the same, thereby causing the ring portion to separate from the skirt of the cap portion and fall, thereby providing an indication that the container has been open.
Decelles Gilles
Robic
LandOfFree
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